Which Henry Mausoleum came first?

Yesterday i spent almost all my afternoon to try and find out which of the 2 similar mausolea came first ~ the one for the Doulton family or the one for the Tate family. I had already written down all my findings and had not come up with a conclusive answer when i came about this. In my photo of the Doulton monument you can clearly see an information sheet attached to the door.

Now some clever person (obviously not me!) had taken a close-up of that information sheet and this is what it says:

source: Victorian Web Org

And then i found this fantastic website with very valuable additional information ~ highly recommended for further reading. It has a very good search function where you can search for different things like certain mausolea or cemeteries, super convenient! 

The Mausolea & Monument Trust

So i guess the case is closed. The Tate tomb came first and the Doulton mausoleum was designed by the same architects as the Tate one. (And they certainly have been specifically designed to puzzle me!) Now i have back my peace of mind and moreover i have much more reading material because i also found the archive of the newsletter of The Friends of West Norwood Cemetery. I am ready for autumn where i can indulge in reading without feeling bad because i should be outside. ;)